I do prefer my Japanese made whisk, and I do think they are safer.
No one is saying that a person should spend a lot of money on artisan equipment just to enjoy matcha, but matcha is not a budget beverage. If quality is desired, there is a certain amount of money that a matcha drinker should be prepared to part with. There are alternatives to a chasen--you can get by with a kitchen whisk or even a spoon, if you are only concerened with mixing it up. But if you want a traditional matcha, good foam, and a good mix, a chasen is the way to go, and that's going to cost 20-30 bucks, a drop in the bucket to what the matcha itself is going to cost you over time.